:root{--bg-color: #ffffff;--text-color: #1f2937;--heading-color: #111827;--btn-bg: #2563eb;--btn-text: #ffffff;--btn-hover: #1d4ed8;--btn-active: #1e3a8a;--select-bg: #ffffff;--select-text: #111827;--select-border: #d1d5db;--select-focus-border: #3b82f6;--select-focus-shadow: rgba(59, 130, 246, .1);--select-icon: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 16 16' fill='none'%3E%3Cpath d='M4 6L8 10L12 6' stroke='%23374151' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E")}@media(prefers-color-scheme:dark){:root{--bg-color: #111827;--text-color: #e5e7eb;--heading-color: #f9fafb;--btn-bg: #3b82f6;--btn-text: #ffffff;--btn-hover: #60a5fa;--btn-active: #2563eb;--select-bg: #1f2937;--select-text: #f3f4f6;--select-border: #374151;--select-focus-border: #60a5fa;--select-focus-shadow: rgba(96, 165, 250, .15);--select-icon: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 16 16' fill='none'%3E%3Cpath d='M4 6L8 10L12 6' stroke='%239ca3af' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E")}}*{margin:0;padding:0;box-sizing:border-box}body{height:100vh;margin:0;padding:0;display:flex;flex-direction:column;background-color:var(--bg-color);color:var(--text-color);transition:background-color .3s ease,color .3s ease}h1{font-size:1.5rem;font-weight:700;margin-bottom:1rem;color:var(--heading-color)}iframe{width:100%;flex:1;min-height:0;border:none;overflow-x:hidden}img{display:block;margin-left:auto;margin-right:auto;width:100%}button:hover{background-color:var(--btn-hover)}button:active{background-color:var(--btn-active)}.iframe-container{display:flex;flex:1;min-height:0;padding:0;width:100%;flex-direction:column;align-items:center}.iframe-container .version-select{width:100%;padding:.75rem 2.5rem .75rem .75rem;font-size:1rem;border:1px solid var(--select-border);border-radius:.375rem;margin-bottom:32px;cursor:pointer;appearance:none;-webkit-appearance:none;-moz-appearance:none;background-repeat:no-repeat;background-position:right 1rem center;background-size:16px;background-color:var(--select-bg);color:var(--select-text);background-image:var(--select-icon)}.iframe-container .version-select:focus{outline:none;border-color:var(--select-focus-border);box-shadow:0 0 0 3px var(--select-focus-shadow)}.iframe-container .wrap-btn-submit{width:100%;margin:16px 0;display:flex;gap:16px}.iframe-container .wrap-btn-submit .btn{width:100%;border:none;border-radius:20px;cursor:pointer;padding:12px 10px;min-height:44px;font-size:14px;line-height:20px;font-weight:700}.iframe-container .wrap-btn-submit .btn.btn-primary{background-color:var(--btn-bg);color:var(--btn-text)}@media screen and (min-width:768px){.terms{padding:3rem}h1{font-size:2rem}img{width:100%;max-width:100%;margin:0}}